John hanlon



FFICEG aren't JOHN HANLON, OF NEIV YORK, N. Y.

WATER-COOLED VALVE.

SPECIFICATION forming part of Letters Patent No. 434,867, dated Au ust19, 1890.

Application filed April 1 3 l 88 9.

To all whom, it may concern.-

Be it known that I, JOHN HANLON, a citizen of the United States,residing at New York city, in the county of New York and State of NewYork, have invented certain new and useful Improvements in \Vater-CooledValves; and I do hereby declare the following to be a tion, such as willenable others skilled in the art to which it appertains to make and usethe same This invention relates to water-cooled valves adapted for usein pipes, hues, and connections of gas-generators, metallurgic furnaces,and other pipes through which a highly-heated fluid is passed.

My present invention is an improvement upon the Water-cooled valvecovered by Letters Patent granted to J as. E. Loadley, No. 289,277,dated November '7, 1883.

The object of this invention is to simplify the construction andoperation of the valve. The lateral water-circulating pipes and theirstuffing-boxes connecting with the valve-casing as heretoforeconstructed are omitted in my present improvement, and in lieu thereofthe valve stem or red is madehollow and provided with a verticaldivision-plate, the inlet and outlet water-pipes being connecteddirectly to the stem-one on each side of the partition-plateashereinafter more fully de scribed. The lateral circulating-pipesheretofore used were apt to cause trouble by sticking or binding intheir bearings or stuffingboxes. By my present invention this difficultyis overcome. I also provide a removable screw-plug in the bottom of thevalve body for the removal of dirt or other obstructions which may bedeposited within the valvebody.

My invention is illustrated in the accompanying drawings, in which-Figure 1 represents a vertical transverse section of a valve and itsconnections, showing the means for maintaining a practically uniformtemperature in the valve and around its body. Fig. 2 represents anelevation, partly in section, of a valve and its casing without thesurrounding reservoir. Fig. 3 represents a vertical section taken atright angles to the view shown in Figs. 1 and 2.

The pipe-section S has secured to and ex- Serial No. 307,158. (Nomodel.)

tending above it the valve-casing A. There is cast with the section Sthe usual seat A for a slidevalve and a downwardly-extending chamber D,forminga dust-trap, whereby soot or ashes falling on or above thesloping valve-seat are collected for removal at any convenient time. Thelower end of chamber D is closed by removable lid d. The dustchamber maybe riveted or otherwise secured to the pipe-section, instead of beingcast with it. The valve 13 is chambered or made 1101-- low, as shown,for the circulation of water through it, and is provided at its lowerextreinity with an opening, into which is fitted a screw-plug g, for theremoval of dirt or other foreign matter which may be deposited in thevalve. The valve-stem or rod a is made 1101- low and provided with alongitudinal partition f, forming two passages e e. The stem is securedin the valve B by a screw-joint or other well-known means. The partitionf and the wall of the stem (0, to which is attached the water-inlet pipeE, are extended down into the valve-chamber B, forming an extension 6'',while the Wall 6 terminates near the top of the valve-chamber. Theextension 6" may be bent laterally, as indicated by dotted lines, so asto discharge water tangentially against the inner wall of the valve, ifdesired, for better scouring the interior of chamber of the valve. Thisconstruction, however, will not usually be required. The hollow stem atpasses through a stuffing-box in the top of the valve-casing in theusual manner, and in practice is connected exteriorly with any suitablemechanism to operate the valve-such as a rack and pinion, the rack beingformed on the hollow stem, or a pivoted lever resting upon or pivoted toa standard on the tank 0. The valve-stem is provided on each side withshort nipples for connecting the flexible supply and discharge pipes Eand F. The water-inlet pipe E in practice is connected outside of tank 0with an elevated reservoir or other suitable means for supplying water,and the outlet-pipe F extends, as shown, down to near the bottom of tank0, where water is discharged for circulating around the valve seat andcasing. The tank 0 is made of sheet metal, preferably of rectangularform, and is suitably secured to the pipe-section and valve-casing. .Itis provided with an overflow-pipe m and with a drain-pipe N, having avalve n. It will be seen that water flowing into the interior of thevalve through pipe E, one division of the hollow stem a, and theextension 6', and out through the other division of the hollow stem andpipe F into tank 0 will thoroughly cool the valve, its seat, and casing,so as to prevent any Warping or twisting of parts under the action ofhighly-heated fluids which may be passed through the connecting pipe orline. It has given perfect satisfaction in practical operation. Shoulddust or ashes collect in chamber D, they are readily removed by takingoff lid d, and any foreign matter which is deposited in the interiorchamb er of the valve is readily removed by taking out screw-plug g.

The water-cooled valve and connectingpipes, may be used with excellentresults without the surrounding water-tank, as the invention is notlimited to the tank in such connection.

Having thus described my invention, what I claim, and desire to secureby Letters Patcut, is

In combination with a pipe having a valveseat, an opening through thepipe below such seat provided with alid, ZLhOllOWWLtGlEGOOIGd valvehaving at the bottom an opening registering with the opening in the pipeand closed by a removable screw-plug, and water supply and dischargepipes connecting with the 1101- low valve, for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN HANLON.

Witnesses:

F. W. SEMKEN, FRANKLIN A. STEMMLER.

